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<html lang="en">
<head>
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    <title>底部</title>
    <style>
        html{
            background-color: white;
        }
        ul{
            list-style-type: none;
        }
        ul li{
            height: 30px;
            line-height: 30px;
            color: gray
        }
    </style>
</head>
<body>
<div>
    <ul>
        <li>问题反馈电话：123456789</li>
        <li> 邮箱：789456123@163.com</li>
    </ul>

</div>

</body>
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